PHOENIX -- A Phoenix police officer and a Maricopa County sheriff's posse
member remained in critical condition Wednesday after a shooting that was
spurred by an armed robbery and police chase.

The shooting happened Tuesday near two Phoenix
restaurants. Officers chased Roger Allen Sharp, 26, and David Lee Murray, Jr., 36, until
their car crashed into a pickup truck at an intersection, police said.

Sharp of Phoenix, was being held on suspicion of attempted
murder, burglary, unlawful flight, resisting arrest, and illegal possession of a
weapon. Court records show he was previously convicted of two counts of criminal
possession of a forgery device and his right to have a gun has not been
restored.

After the crash, one officer had Sharp at gunpoint but the two began to struggle, police said. The off-duty posse member, who was
driving the pickup, tried to help.

"Ultimately, Sharp was able to take control of the officer's gun, and he used
it to shoot both the officer and the man who came to his aid," Sgt. Tommy
Thompson said in a news release.

Police said Sharp and Murray ran into a neighborhood, where they were captured. Scottsdale police also recovered a handgun that is believed
to belong to the wounded officer.

Murray, 36, of Tempe, was booked into jail on suspicion of armed
robbery.

Thompson said the investigation is ongoing.

The 34-year-old wounded officer has been with Phoenix police for seven years
and is married and has children. He was shot in the abdomen and underwent
surgery at a Scottsdale hospital.

A civilian who was riding along with the officer was not injured.

Sheriff Joe Arpaio said the volunteer posse member, a 63-year-old Vietnam
veteran, was not on duty the day of the shooting but still took action to help
the officer.

"This is a sad day," the sheriff said Tuesday.

The names of the wounded men haven't been released.

More than 50 officer-involved shootings occurred in the Phoenix area in 2013,
making for one of the most violent years for officers and suspects. Authorities
have said nearly all of the people shot by police last year were armed.